Pros
Leviathan consistently punches above their weight for the size of company they are. Working here, the management was truly kind to me and never treated me like a number or a widget. They took care of me when things outside of work went wrong. I am very impressed such a small company can keep a research department running and produce such excellent work. I worked with some of the most capable people I have ever worked with while I was here. During my time here I witnessed management stand by their morals, even when it meant turning down money. They are successful without being evil. There are good perks; travel opportunity, conferences, a positive employer to have while publishing work, good to work with in regards to IP and personal development.
Cons
Being a small company, there is little insulation from a customer falling through or a bad quarter. Running lean means cash flow is king and this can be stressful. Sometimes management will conduct their stress to help deliver.